Speed Test

[pskyboy]

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[Curufir]

Err, is it just me or won't any code you use to check speed inside bochs give the 'Emulated' speed of the processor, not the equivalent real time speed?

[pskyboy]

Yes, re reading my post i realised it didn't quite put across what i intended. It was purely a comparative excercise to show the difference in speed between emulating something and running it natively.

Peter

[Pype.Clicker]

busy looping is a very old-fashionned and unportable way to wait ... you should better replace your loop by something that will be kept accurate regardless of the actual CPU speed, like
* waiting for a timer interrupt
* waiting for a keypress (my personnal favourite one - can even be done by polling the keyboard port if you don't have an IDT up and running already
* waiting for a screen vertical retrace (if interrupt set up seems too hard to you)